Yesterday I've got GNU Classpath 0.20 with Qtopia Core 4.1.1 (that's the new
name for Qt/Embedded 4.1.x) snapshot 20060131 running on an industrial
PDA-like device.
Qt/Embedded Applications need a so called QWS-Server. AFAIK this server is
responsible for placing the windows, getting keyboard input etc. After all,
Qt/Embedded run's directly in the Framebuffer and so there is no X-Windows
Window Manager.
An application can either be called with -qws as command line option
or it can instantiate the QApplication() with a QApplication::GuiServer
argument.
The latter is done if the system property "qtoptions.qws" is set.
The patch would be less invasive if I wouldn't have followed the original
qt-peer programming pattern, e.g. I could directly get the system properties
in the native code. That way only one file would be needed to be patched, no
Java class would need a "private boolean qws" variable etc. But this patch
mimicks the code-path that qt-peer does with the doublebuffer variable.
Once applied and compiled, you can call Qt/Embedded apps like this:
jamvm \
-Dawt.toolkit=gnu.java.awt.peer.qt.QtToolkit \
-Dqtoptions.qws=true \
-classpath /opt/java/examples.zip \
gnu.classpath.examples.awt.Demo
If you have a separate QWS server running:
#include <QtGui/QApplication>
-----------------------------------------------
int main(int argc, char* argv[])
{
QApplication app(argc, argv, QApplication::GuiServer);
app.exec();
return 0;
}
-----------------------------------------------
then you can simply omit the "-Dqtoptions.qws=something".
Qt/Embedded applications run without X11 directly on the framebuffer.
But some instance still needs to place the windows, that's the QWS server.
An Qt/E application can either be called with -qws as command line option
or it can instantiate the QApplication() with a QApplication::GuiServer
argument.
The latter is done if the system property "qtoptions.qws" is set.
--- c.orig/gnu/java/awt/peer/qt/MainQtThread.java
+++ c/gnu/java/awt/peer/qt/MainQtThread.java
@@ -51,11 +51,13 @@
String theme;
private boolean running;
private boolean doublebuffer;
+ private boolean qws;
- public MainQtThread( String theme, boolean doublebuffer )
+ public MainQtThread( String theme, boolean doublebuffer, boolean qws )
{
this.theme = theme;
this.doublebuffer = doublebuffer;
+ this.qws = qws;
running = false;
}
@@ -67,7 +69,7 @@
/**
* Creates the QApplication
*/
- public native long init(String theme, boolean doublebuffer);
+ public native long init(String theme, boolean doublebuffer, boolean qws);
/**
* Runs the QApplication (doesn't return.)
@@ -76,7 +78,7 @@
public void run()
{
- QApplicationPointer = init(theme, doublebuffer);
+ QApplicationPointer = init(theme, doublebuffer, qws);
running = true;
exec(QApplicationPointer);
}
--- c.orig/gnu/java/awt/peer/qt/QtToolkit.java
+++ c/gnu/java/awt/peer/qt/QtToolkit.java
@@ -167,7 +167,21 @@
{
}
- guiThread = new MainQtThread( theme, doublebuffer );
+ boolean qws = false;
+ try
+ {
+ String s = System.getProperty("qtoptions.qws");
+ if(s != null)
+ qws = true;
+ }
+ catch(SecurityException e)
+ {
+ }
+ catch(IllegalArgumentException e)
+ {
+ }
+
+ guiThread = new MainQtThread( theme, doublebuffer, qws );
guiThread.start();
repaintThread.start();
}
--- c.orig/include/gnu_java_awt_peer_qt_MainQtThread.h
+++ c/include/gnu_java_awt_peer_qt_MainQtThread.h
@@ -10,7 +10,7 @@
{
#endif
-JNIEXPORT jlong JNICALL Java_gnu_java_awt_peer_qt_MainQtThread_init (JNIEnv *env, jobject, jstring, jboolean);
+JNIEXPORT jlong JNICALL Java_gnu_java_awt_peer_qt_MainQtThread_init (JNIEnv *env, jobject, jstring, jboolean, jboolean);
JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_MainQtThread_exec (JNIEnv *env, jobject, jlong);
#ifdef __cplusplus
--- c.orig/native/jni/qt-peer/mainqtthread.cpp
+++ c/native/jni/qt-peer/mainqtthread.cpp
@@ -50,7 +50,7 @@
* Starts up a QApplication
*/
JNIEXPORT jlong JNICALL Java_gnu_java_awt_peer_qt_MainQtThread_init
-(JNIEnv *env, jobject obj, jstring theme, jboolean doublebuffer)
+(JNIEnv *env, jobject obj, jstring theme, jboolean doublebuffer, jboolean qws)
{
int *argc;
char **argv;
@@ -75,7 +75,7 @@
argv[0] = (char *)malloc(10 * sizeof(char));
strncpy(argv[0], " \0", 3);
}
- QApplication *qtApp = new QApplication( *argc, argv );
+ QApplication *qtApp = new QApplication( *argc, argv, qws ? QApplication::GuiServer : QApplication::GuiClient );
assert( qtApp );
qApplication = qtApp;
